/*!	 widgets/widget_gradient.h
**	 Template Header
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_STUDIO_WIDGET_GRADIENT_H
#define __SYNFIG_STUDIO_WIDGET_GRADIENT_H

#include <gtkmm/drawingarea.h>
#include <synfig/gradient.h>

namespace studio
{

void render_gradient_to_window(const Cairo::RefPtr<Cairo::Context> &cr, const Gdk::Rectangle& ca, const synfig::Gradient &gradient);

class Widget_Gradient : public Gtk::DrawingArea
{
    sigc::signal<void> signal_value_changed_;
    sigc::signal<void> signal_clicked_;

    sigc::signal<void, synfig::Gradient::CPoint> signal_cpoint_selected_;

    synfig::Gradient gradient_;

    bool editable_;

    bool changed_;

    synfig::Gradient::CPoint	selected_cpoint;

    void popup_menu(float x);

    void insert_cpoint(float x);

    void remove_cpoint(float x);

public:

    Widget_Gradient();

    ~Widget_Gradient();

    sigc::signal<void>& signal_value_changed()
    {
        return signal_value_changed_;
    }
    sigc::signal<void>& signal_clicked()
    {
        return signal_clicked_;
    }

    sigc::signal<void, synfig::Gradient::CPoint>& signal_cpoint_selected()
    {
        return signal_cpoint_selected_;
    }

    void set_value(const synfig::Gradient& x);

    const synfig::Gradient& get_value()const
    {
        return gradient_;
    }

    void set_editable(bool x = true)
    {
        editable_ = x;
    }

    bool get_editable()const
    {
        return editable_;
    }

    void set_selected_cpoint(const synfig::Gradient::CPoint &x);

    const synfig::Gradient::CPoint& get_selected_cpoint()
    {
        return selected_cpoint;
    }

    void update_cpoint(const synfig::Gradient::CPoint &x);

    bool on_draw(const ::Cairo::RefPtr< ::Cairo::Context>& cr);

    bool on_event(GdkEvent *event);
}; // END of class BlackLevelSelector

}; // END of namespace studio

#endif